
<template>
    <div class="app-container">
        <!--表单-->
        <el-form :inline="true" class="demo-form-inline">
            <el-form-item>
                <el-input v-model="searchObj.hosname" placeholder="点击输入医院名称" />
            </el-form-item>
            <el-form-item>
                <el-date-picker v-model="searchObj.reserveDateBegin" type="date" placeholder="选择开始日期"
                    value-format="yyyy-MM-dd" />
            </el-form-item>
            <el-form-item>
                <el-date-picker v-model="searchObj.reserveDateEnd" type="date" placeholder="选择截止日期"
                    value-format="yyyy-MM-dd" />
            </el-form-item>
            <el-button :disabled="btnDisabled" type="primary" icon="el-icon-search" @click="showChart()">查询</el-button>
        </el-form>
        <div class="chart-container">
            <div id="chart" ref="chart" class="chart" style="height:500px;width:100%" />
        </div>
    </div>
</template>
<script>
import echarts from 'echarts'
import statisticsApi from '@/api/statistics'
export default {
    data() {
        return {
            searchObj: {
                hosname: '',
                reserveDateBegin: '',
                reserveDateEnd: ''
            },
            btnDisabled: false,
            chart: null,
            title: '',
            xData: [], // x轴数据
            yData: [] // y轴数据
        }
    },
    methods: {
        // 初始化图表数据
        showChart() {
            statisticsApi.getCountMap(this.searchObj).then(response => {
                this.yData = response.data.countList
                this.xData = response.data.dateList
                this.setChartData()

            })
        },
        setChartData() {
            // 基于准备好的dom，初始化echarts实例
            var myChart = echarts.init(document.getElementById('chart'))
            // 指定图表的配置项和数据
            var option = {
                title: {
                    text: this.title + '挂号量统计'
                },
                tooltip: {},
                legend: {
                    data: [this.title]
                },
                xAxis: {
                    data: this.xData
                },
                yAxis: {
                    minInterval: 1
                },
                series: [{
                    name: this.title,
                    type: 'line',
                    data: this.yData
                }]
            }
            // 使用刚指定的配置项和数据显示图表。
            myChart.setOption(option)
        },
    }
}
</script>